BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 469 54.8%
2 United States 149 17.4%
3 Netherlands 116 13.6%
4 Germany 53 6.2%
5 France 33 3.9%
6 Canada 21 2.5%
7 Hong Kong 3 0.4%
8 Japan 3 0.4%
9 Singapore 2 0.2%
10 Slovakia 2 0.2%
11 Slovenia 2 0.2%
12 Taiwan 1 0.1%
13 Luxembourg 1 0.1%
14 1 0.1%